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Compare Generators Side-by-Side

Select up to 4 generators to compare specs, power output, noise levels, runtime and more. Your compare URL is shareable.

  • Firman W01785
  • Generac #8151 iQ3600DF
  • Model W01785
    Model W01785

    Firman 1,700W Gas Generator

    1700W
    Running
    54 dB
    Noise
    View details
  • Model #8151 iQ3600DF
    Model #8151 iQ3600DF

    Generac 2,800W Dual-Fuel Generator

    2800W
    Running
    0 dB
    Noise
    View details
Quick charts
Each chart uses its own Y-axis scale (so numbers are comparable within a chart).
Running watts
W
Starting watts
W
Noise
dB
Runtime @50%
h
Running watts by fuel
Shows how output changes across gasoline/propane/natural gas (when available).
Generator Specifications Comparison
SpecificationFirman W01785Generac #8151 iQ3600DF
General
Product type
Generator
Generator
Fuel
Gasoline
Dual-Fuel
InverterYesYes
Parallel capableYesYes
RV readyNoNo
Running watts
1700 W
Winner: Winner: 2800 W
Starting watts
2100 W
Winner: Winner: 3600 W
Noise (lower limit)
Winner: Winner: 54 dB
0 dB
Weight
Winner: Winner: 45.9 lbs
107 lbs
Run time @50% load
Not available—
Winner: Winner: 13 h
Run time @25% load
9 h
Not available—
Fuel tank
0.9 gal
3.17 gal
Fuel gaugeNoYes
Approx. dimensions (L × W × H)
20 x 12.1 x 16.7
24.6 x 20.3 x 22.5
Electrical
Voltage (AC)
120
120
Voltage (DC)
5
5
GFCI outletsNoYes
Covered outletsYesYes
Automatic Voltage RegulationYesYes
THD
<3% %
<3% %
Engine
Engine
80 cc OHV 4-stroke, cast iron sleeve.
212 cc OHV 4-stroke
Alternator
Not available—
Not available—
Starting system
Not available—
Recoil, Electric
Warranty
Warranty
3 years
3 years
Power by fuel
GasolineNot available—Not available—
Running watts
Not available—
2800 W
Starting watts
Not available—
3600 W
Running amps (120V)
Not available—
Not available—
Running amps (240V)
Not available—
Not available—
Peak amps (120V)
Not available—
Not available—
Peak amps (240V)
Not available—
Not available—
Run time @50% load
Not available—
13 h
Run time @25% load
Not available—
Not available—
PropaneNot available—Not available—
Running watts
Not available—
2500 W
Starting watts
Not available—
3200 W
Running amps (120V)
Not available—
Not available—
Running amps (240V)
Not available—
Not available—
Peak amps (120V)
Not available—
Not available—
Peak amps (240V)
Not available—
Not available—
Run time @50% load
Not available—
16 h
Run time @25% load
Not available—
Not available—
Other
Data center
Not available—
Not available—
Indicators
true
true
Compliance
CARB, EPA
EPA, ANSI/PGMA G300-2023
Security
Not available—
Not available—
Spark arrestorYesYes
Neutral
Floating
true
UPC
840876117859
Not available—
Core / High-priority specs
Running Watts (Gasoline)
Not available—
2800
Running Watts (Propane)
Not available—
2500
Starting Watts (Gasoline)
Not available—
3600
Starting Watts (Propane)
Not available—
3200
Runtime @ 50% Load (Gasoline)
Not available—
13
Runtime @ 50% Load (Propane)
Not available—
16
AC Outlet Types
1x 120V 20A (5-20R); 1x 120V 30A (L5-30R)
2x Duplex 120V 20A (5-20R) GFCI1x 120V 30A (L5-30R)
Electrical & power
Frequency
60
60
Engine & construction
Engine Type
80 cc OHV 4-stroke, cast iron sleeve.
212 cc OHV 4-stroke
Engine Displacement
80
212
Cylinder Sleeve
cast iron sleeve
Not available—
Engine Oil Type
Not available—
10W-30
Runtime & fuel system
Runtime @ 50% Load (Gasoline)
Not available—
13
Runtime @ 50% Load (Propane)
Not available—
16
Controls & display
Display Type
Not available—
Digital
Safety & compliance
Low Oil ProtectionYesYes
Carbon Monoxide MonitoringYesYes
Included equipment
Starting Components
Not available—
Recoil, Electric
Included Accessories
Oil, funnel, tool kit, and RV adapter
Oil, funnel, tool kit, propane hose, and battery
Warranty & identification
Residential Warranty
3
Not available—
Additional specs
Summary
The Firman W01785 is a 1,700-watt inverter generator built on an 80 cc OHV 4-stroke engine with a cast iron sleeve. At 45.9 lbs, this unit delivers enough power to run a laptop, phone chargers, small power tools, and basic household appliances simultaneously, but cannot handle heavy loads like air conditioners or large welders. The 2,100-watt peak gives it the starting surge needed for devices with inrush current, such as refrigerators or circular saws. Because the W01785 runs on gasoline and produces less than 3 percent THD, users can safely connect sensitive electronics like laptops and televisions without risk of voltage spikes causing damage. The 54 dB noise level means operation at conversational volume, making this unit suitable for campgrounds, residential neighborhoods, and RV parks where noise restrictions apply.
The Generac iQ3600DF is a 2,800-watt dual-fuel inverter generator that handles mid-range loads like essential home circuits during outages, multiple appliances at a campsite, or a mix of power tools on a job site. Gasoline delivers 2,800 running watts with 3,600 starting watts; propane runs at 2,500 watts with 3,200 starting watts. The dual-fuel design lets users choose based on fuel availability and storage preferences. Inverter technology keeps THD below 3 percent, protecting laptops and TVs from voltage spikes. Electric start with an included battery eliminates pull-cord friction. The 107-pound weight and compact footprint make it semi-portable but manageable for truck beds and garage storage.
  • Most Powerful
    Generac #8151 iQ3600DF
    2800W running
  • Quietest
    Firman W01785
    54 dB
  • Longest Runtime
    Generac #8151 iQ3600DF
    13h at 50% load
Where to buy
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Firman W01785
Store links
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Generac #8151 iQ3600DF
Store links
No links yet.
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